"I played that warm-up game and thought I shouldn't be playing Test matches, because I was playing [like it was] a T20," Kapp said afterwards. "But if you just take it ball by ball, and forget about the colour of the ball that's coming towards you, it helps a lot."

"It helps me more than it helps them [the lower order]," she said. "If I focus on the other batter, it seems to take pressure off me. When I give advice, I forget the situation we are in and it helps me focus a bit more."

She shared in a 72-run sixth-wicket stand with Anneke Bosch, South Africa's best partnership, and 41 and 49 runs for the seventh and ninth-wicket respectively, where she was the dominant partner. Sinalo Jafta scored only four runs off 39 balls in their partnership and Tumi Sekhukhune 9 off 26 when Kapp was dismissed. In that time, Kapp got to her century and changed her strategy from off-side dominant run-scoring to finding gaps on the leg side too.

"I knew the older the ball got, I could take on the England bowlers a bit more and I knew they were tired," she said.

Kapp ended with the highest score by a South African woman and the highest by a No. 6 batter in Tests, achievements that far surpass her modest goals. "Usually I aim for 50s, especially in the formats we play," she said. "To come out today and score that 150 is pretty special for me. It's going to be a massive highlight for me."

"At times, it's so difficult to focus on both bowling and batting," she said. "I feel like one always takes preference. I have been working with some special coaches as well, that's really helped me on this journey. The confidence is growing and that's probably why I am starting to play a lot better."

And now that she has had a second, successful taste of Test cricket, does Kapp want more? "At the age where I am at now, it probably wouldn't be the best decision," she said, all of 32 years old, though she hopes the younger generation can benefit from more fixtures. "But I feel like if we want to grow the women's game a bit more, it's needed. It's in Tests where you can try things and learn so much about yourself. I would like to see women play a lot more Tests because it would be good for the game."